Planck CMB temperature data (blue to red spans 100 $\mu$K) from 25 galaxy clusters showing a dipole signal from rotating intracluster gas. Selected for an Editors’ Suggestion.

From the article:

Evidence of Galaxy Cluster Rotation and Intrahalo Gas Motions in the Cosmic Microwave Background
Samuel Goldstein and J. Colin Hill
Phys. Rev. Lett. 137, 161001 (2026)

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